Built and tested locally.
From the changelog:
```
Firefox 45/46 compatibility
* [Zotero Standalone] Save PDFs directly from browsers via the Save to
Zotero button
* Requires Chrome connector version 4.0.29; updated Safari connector
coming soon
* To convert a standalone PDF attachment to a full item, right-click
the item and choose “Retrieve Metadata for PDF” or “Create Parent
Item”.
* [Zotero for Firefox] Don't show Firefox open/save dialog when
showing style installation prompt
* Retry additional file sync failures automatically
* Fixed potential crash when dragging in files on some systems
* Fixed potential crash when dragging collections to another library
* Miscellaneous bibliographic output and word processor integration
fixes
* Updated citeproc-js to version 1.1.71
* Fixed spacing of toolbar icons on Windows/Linux in Firefox 43+
* Use larger text field for Book Title
* Make highlight color of selected items list rows on Linux more
distinct when items pane doesn't have focus
* [Zotero for Firefox] Improved error message on Firefox login manager
failure
* Improved error message when trying to use a later database version
```
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